http://www.pfeil-verlag.de/04biol/pdf/ief26_3_02.pdf
Geophagus diamantinensis, new species, is described from the Paraguaçu River basin, endemic from Chapada Diamantina
region, Bahia state in north-eastern Brazil. It is recognized by both a tree-based and a character-based
approaches for species delimitation, using mt-DNA and morphological data, respectively. Geophagus diamantinensis
is distinguished from all other species of the G. brasiliensis species group by a deep urohyal bone, characters
of colour pattern and head slender. In addition, Geophagus diamantinensis can be distinguished from G. itapicuruensis
by having more dorsal-fin spines and from G. obscurus by having subterminal mouth.